We tested data speeds on AT&T, Sprint, T-Mobile, and Verizon Wireless in 30 US cities. Find out which network is the fastest where you live.

Our drive through the Southeast took us from the Triangle to the Triad, down I-85 to Charlotte and Atlanta with a stop in Greenville, down I-75 to Orlando, over to Tampa, and then back across on FL-70 to West Palm Beach and Miami.

As we saw in the Northeast, AT&T did the best on our Southeastern segment, in this case with the best upload and download speeds. Verizon, long renowned for excellent coverage, came a close second.

But in my mind, the big news here is that T-Mobile is now a viable player in North Carolina, where it struggled with coverage for a while. T-Mobile was in the green all though our NC drive, while Sprint coverage dropped a few times north of Charlotte.

Verizon may be a better choice than AT&T in Florida, because of coverage. AT&T's LTE network struggled a bit on our cross-Florida drive, with dropouts in the swampy middle of the state along FL-70. Verizon kept on truckin' with LTE the whole time.

PCMag.com's lead mobile analyst, Sascha Segan, has reviewed hundreds of smartphones, tablets and other gadgets in more than 9 years with PCMag. He's the head of our Fastest Mobile Networks project, one of the hosts of the daily PCMag Live Web show and speaks frequently in mass media on cell-phone-related issues. His commentary has appeared on ABC, the BBC, the CBC, CNBC, CNN, Fox News, and in newspapers from San Antonio, Texas to Edmonton, Alberta. Segan is also a multiple award-winning travel writer, having contributed... More

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Fastest Mobile Networks 2017 - PCMag